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Thank you for the comments guys they really help! I’m finding it harder and harder towards the finish line to maintain a steady and careful pace. There are areas on my other engines that I feel could have easily been improved if I spent just a little more time on them. Although there are still...

Hi all, i have been very busy in the workshop and not really allowing time to keep up dated here. i will do my best to catch up again. So following on from the last post after finishing the rods and making the pistons i pressed in the liners with some "suzuki bond" this is a grey three bond...

Wow these are very nice parts, the master and link rods look very much like production parts! What grade of aluminium are these? Also thank you for your reply about the valve chambers, this makes me feel more comfortable with my choice of brass for mine.

What is the reason you chose brass for the valve chambers? I ask because I am building a side valve inline four with the same design and material thinking it seemed like a good material for a model engine without any idea if it would really be suitable. I would love to know your thoughts on...

Hey I have built a three cylinder radial recently so I will be following with interest also! Are your valve chambers made from brass or bronze? Thanks for sharing :).

I finished up the small end rod eyes by hand, this may be slight cop out but I Was very worried about screwing up the rods now after so much work. I have made up some piston pins drilled them through the centre and made up some brass buttons for the ends , these are a light press fit with some...

Thank you that is great advice, I had always machined my register/fixture on the lathe then transferred it to the rotary table. It seems obvious now you point it out that if I machine the register on the rotary table itself then it will be true. Thank you very much!

I like this idea, some of the manufacturer special tools that we have for working on motorcycles are piston ring compressors made this way. The only problem I have with this method is that the liners already have chamfers on so one of the liners I think will lose it totally and one of the others...

Here are the liners and pistons. The liners are made from meehanite and lapped to size on a home made brass lap with fine grinding paste. The pistons are made from 7075 aluminium. I plan to make the rings from the same material as the liners. Due to some poor machining on my part the top lip on...

This is a very nice thread, very informative thank you for sharing. I will definitely be using some of your techniques.

I’ll keep posting pictures until I am up to my current stage then hopefully I’ll try my best to talk through my work as I progress.

All of these operations are probably quite simple to most but to me they are all firsts. It’s been a great learning curve and most parts have come out good or at least very useable.

Hey, I have been very busy in he worship and not keeping up to date with the build thread. So much more pictures than info. I will do my best to give a description of all the pictures. Here we have a rough kit of materials and a little marking out. Here I am opening up what will be the...

I have held off from starting any build threads on my last three engines as I have never really been sure that they wouldn’t just be a lost cause. After completing my last engine (the three cylinder radial) which was a great success for me, I think I just need to have a little more confidence in...

Hi I’d happily tell you any dimensions that I can remember or that can be measured from the outside. There is a couple of people that would like some slightly more detailed measurements to draw up some plans, I’d be happy to note them down too if I ever strip the engine down. Thanks, Sam.

I suppose if the holes were big enough if might work. Would be interesting to try. You could almost machine one up from a cheaper aluminium or even plastic to test the air movement.

Could the first flywheel be made with a tilted rotary table?

Thank you Brian, that means a lot coming from you.

Those are actually the exhausts, I designed them with two things in mind, one was that I wanted them to give a performance classic aero kind of look and also in the hope that they would echo slightly and amplify the exhaust note. They don’t really sound quite as sweet as it did with straight...

There are a couple of people that have offered to do plans for this and one of my other engines too. The trouble with this engine is that the main crank pin is large for the master rod size so that has compromised the size of the link rod bronze bearings. I think if I were to design that part...